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10.3) Inverter stage
The inverter stage is the second power conversion block. This
stage carries out the DC/AC conversion allowing an AC voltage
to be obtained at a frequency.
The AC voltage is fed to the transformer primary. Since the
dimensions of the transformer are inversely proportional to
the frequency of the voltage applied, the fact of switching at
high frequency makes it possible to have transformers of small
dimensions and with lower magnetic losses compared to the
50/60HZ mains frequency transformers.
The transformer, in addition to adapting the voltage and cur-
rent levels, also allows the galvanic insulation required by the
applicable regulations to be obtained between the user and
the mains.
The inverter provided by Selco for the Genesis 1700AC/DC
and Genesis 2200AC/DC machines is a resonant inverter of
the Zero Voltage Switching type. Therefore, the switchings of
the electronic switches are made when the voltage is nil, thus
reducing the switching losses and increasing the efficiency of the
system. The regulation of the output power is done by the Phase
Switching technique.
Inverter driver stage and control system are DSP (Digital Signal
Processing).
Summary of Contents for Genesis 1700 AC/DC
Page 1: ...Genesis 1700 AC DC Genesis 2200 AC DC MANUALE DI RIPARAZIONE REPAIR MANUAL ...
Page 51: ...161 PFC S POWER COMPONENTS D11 IG1 IG2 D1 D7 CN3 M1 CN4 CN5 CN8 CN7 M2 CN6 ...
Page 52: ...162 PFC STAGE LEDS INDICATIONS PFC s POWER COMPONENTS L2 L1 IG1 IG2 D1 CN6 D7 D11 ...
Page 54: ...164 INVERTER STAGE CN3 M1 CN4 CN5 CN8 CN7 M2 Inverter IMS power module ...
Page 62: ...172 15 Remove pcb T3 PFC s POWER COMPONENTS IG1 IG2 D1 NTC1 Unscrew torque screw at 2 2N mt ...
Page 64: ...174 DIODES AND PFC IGBT ORIENTATION Landmark for assembling ...
Page 67: ...177 12 4 Thermic caps inverter side NTC1 T3 CN11 ...
Page 69: ...179 12 5 Thermic caps secondary side T1 T2 15 14 434 CN3 CN2 ...
Page 74: ...184 15 14 439 15 14 42901 L3 L4 L1 L2 ...
Page 75: ...185 Gas valve flow chart signal Pipe 38 39 ...
Page 79: ...189 CN6 15 14 415 CN3 15 14 431 FLAT A FLAT B Inverter commands Boost commands ...
Page 80: ...190 By pass relais flow chart Gas valve ELVI Fan M1 and M2 command signal ...
Page 81: ...191 HF command signal AC command signal Torch switch buttons signals ...
Page 88: ...198 HF pulse in TIG AC HF pulse in TIG DC ...
Page 114: ...224 GENESIS 2200 AC DC FP279 ...
Page 115: ...225 GENESIS 1700 AC DC FP216 ...
Page 116: ...226 GENESIS 2200 AC DC FP216 ...
Page 118: ...228 20 CONNETTORI CONNECTORS GENESIS 1700 AC DC FP279 GENESIS 2200 AC DC FP279 ...
Page 119: ...229 GENESIS 1700 AC DC FP216 GENESIS 2200 AC DC FP216 ...
Page 122: ...232 55 08 022 55 08 023 GENESIS 1700 AC DC FP216 GENESIS 2200 AC DC FP216 ...